Manual floor waxer and polisher



Nov. 5, 194a.- A. CORREA 2,410,634

MANUAL FLOOR WAXER AND POLISHER Filed June 25, 1944 IN ENiOR, BY QW ,fiMia/ /f Patented Nov. 5, 1946 1 Application June23, 1944,;SerialN0. 541,832

In Brazil December 20, 194 3 l The present invention refers to a manual floor waxer and polisher, with which the waxing and polishing of floors can be rnore easily, economically and efficiently performed than with any of the other'types of polishers known to date.

Up to now the rotation of the brushes of a floor polisher has only been accomplished by means of a imotor incorporated with the polisher and connected through a plug to an electric outlet.

fIfhe polisherof the present invention is also provided with rotating brushes; however, their otat o iss ob a ne yihc r c of the brushes against the 'iioor surface, as the usual back and forth movement is given to the polisher.

gI n order to attain this result, two or more circu-larbrushes aremcunted in the underside of the body ofthe polisher, in such a manner that each of them is free to rotate around acorrespending approximately vertical axis and that allofthem oscillate with limited small amplitude around corresponding horizontal axis which cross through the respective approximately vertical rotating axis. Each brush is combined with a conveniently adapted spring which act, by utilizing the limited oscillation allowance of the brushes around their respective horizontal axis, to force the under surfaces of said brushes to be on different planes forming wide obtuse angles, the imaginary edges of which are parallel to the horizontal axis.

When the polisher of the present invention is moved back and forth on the floor in the usual manner, the following occurs: in opposition to the action of the springs which tend to maintain the brushes on different planes, the polisher by its own weight forces the under surfaces of said brushes to be all on the same plane in contact with the surface of the floor to be waxed or polished; however, due to the stress of the springs, the pressure exerted by the brushes on the floor is not uniformly distributed over their entire under surface, and is greater at successive points of their circumferences as the polisher is moved back and forth.

The present invention further includes certain preferred constructive details, as may be noted from the following description made with reference to the attached drawing, in which a preferred embodiment of the invention is exemplified. In this drawing Figure l is a perspective view showing the general appearance of a floor polisher built in accordance with the invention and provided with three brushes;

3 Claims. (01. 27)

2 Figure z'r'eprese'nt s a vertical cross section of same'p'olisher'; and i 'Figure 3 is a bottom view of. the polisher, in which one of the brushes has been removed and another is shown without its respective felt disc.

With reference to the drawing, I is a frame provided in its under side with circular recesses 2 which form salient portions3 .onitsupp'e'r side. The central part of a doubie-a'rini crosshead a 4a is fitted into eac'h of these recesses. Bothsides of the .longerarm bend downwards inright angle forming short vertical, sections, after which they b ndfbafck'inrightangle to the horizontal position;,both ends of theselongerarms' 4 are inserted in corresponding notches. provided for thispurpose inprojecticns 5 of the frame I, The

other farm 4d of thecrossheadsisshorter and serves to. limit the oscillation amplitude of said reen ads by the'factth'at bothfo-f itsfree ends hit, against tljie,lur"ider ;.side ofv recesses 2. ,The their the wager-[arms of each c osshea closer to the external lateral side of frame l, is. connected to nuc ei the v.ends of a cylindricalspiral sp aving. itsjotiielr'inu exacts ajfls crew 1 which is threaded in frame "I from the outside. By turning more or less this screw I it is possible to increase or decrease the tension of spring 6 and consequently to regulate the spring pressure of the crosshead 4-- la.

A vertical axis 8 projects downwards from the center of each crosshead 4-4a and fits into a base supporting the brush 9; this base consists of a conical lubricating box Ill with a cover H, containing an oil soaked felt l2, and is provided with a central tube l3, closed at its bottom, into which the axis 3 is inserted. The lower end of said axis 8 has a concave surface which sets on a metallic ball I5 placed at the bottom of said tube l3 in order to facilitate the rotation of box 10 around axis 8.

Each conical box it is provided at a certain point with a long screw IA extending across said box and penetrating into tube 13 through an orilice 13a; the point of this screw I i projects into an annular groove 8a in the vertical axis 8. The purpose of said screw It is to hold box if! in position around said axis 8 without preventing its rotation. The diameter of orifice l3a is somewhat larger than that of screw M in order to permit the passage of the lubricant from conical box Hi into tube Hi. The annular groove 8a is relatively wide in order to allow a certain vertical leeway of box It in relation to axis 8, so that when th polisher is lifted from the floor said box l0 falls by its own weight to the point where the lower side of groove 8a is held by the free end of screw l4, whereas when the polisher rests on the floor said box It raises along axis 8 to the point where the upper side of groove 8a is retained by the free end of screw I4.

The lower part of box It] is provided with a horizontal disc 16 projecting outwardly which supports a circular brush 9. Tube 13 extends downwards from said box I0 and its lower end may be inserted by pressure into a tubular member I! carrying a felt disc [8 which adapts itself to the under surface of the brush.

Similarly to other usual types of floor polishers,

the polisher of the present invention is provided with an oscillating handle [9. This handle is provided with a latch 20 which may be fastened in a notched projection 2| on the upper side of frame I, in order to facilitate the portableness of the floor polisher.

It will be understood that the present invention is not limited to the above described form of construction, which is merely a preferred form, but on the contrary it is intended to include any modifications made within the spirit of the invention and of the characteristic points mentioned in th following claims.

I claim:

l. A manual floor waxer and polisher including two or more circular brushes, aframe with relation to which the said brushes operate, said frame having circular recesses on its face formed by salient portions on its upper side, a double-arm cross head fitted in each recess and each having a vertical axis, one of the cross arms being shorter than the other, the longer cross arm having its endsjournalled in the fram at opposite sides of the recess, means for yieldingly holding the cross arm and its vertical axis tilted, the said shorter cross arm serving to engage the top wall of the recess for limiting the tilting action,- and means by which the brush is rotatably mounted on the vertical axis. H

2. A manual floor waxer and polisher including two or more circular brushes, a frame with rela- 4 tion to which the said brushes operate, said frame having circular recesses on its face formed by salient portions on its upper side, a double-arm cross head fitted in each recess and each having a vertical axis, one of the cross arms being shorter than the other, the longer cross arm having its ends journalled in the frame at opposite sides of the recess, means for yieldingly holding the cross arm and its vertical axis tilted, the said shorter arm serving to engage the top wall of the recess for limiting the tilting action, and means by which the brush is rotatably mounted on the vertical axis, said means consisting of a conical lubricating box provided with a cover for containing a lubricant and. said box being provided with a central tube closed at its bottom into which tube the vertical axis is inserted, and means for holding the parts assembled.

3. A manual floor waxer and polisher including two or more circular brushes, a frame with relation to which the said brushes operate, said frame having circular recesses on its face formed by salient portions on its upper side, a double-arm cross head fitted in each recess and each having a vertical axis, one of the cross arms being shorter than the other, the longer cross arm having its ends journalled in the frame at opposite sides of the recess, means for yieldingly holding the cross arm and its vertical axis tilted, the said shorter cross arm serving to engage the top wall of the recess for limiting the tilting action, means by which the brush is rotatably mounted on the vertical axis, said means'consisting of a conical lubricating box provided with a cover for con-'- taining a lubricant and said box being provided with a central tube closed at its bottom into which tube the vertical axis is inserted, an annular groove formed in the vertical axis, and a screw extending through the lubricating box and having its end projecting into the annular groove permitting axial movement of the vertical axis and retaining the parts assembled.

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